A used panasonic 20mm mk1 is a decent value...but the af drives me nuts sometimes. I'm thinking of picking up a used 17mm myself. Other than the wonky af in low light conditions, it's a spectacular lens.

Indoors and you have a short tele on your list? The Sigma 60mm is a short telephoto lens and would be hard to use inside a house unless you like really close-up shots. Since you already have the 25mm the 20mm would be a bit redundant in focal length{only a tiny bit wider} but it would be smaller and lighter since it is a pancake. I would think the 17mm would make the most sense for your needs.

Yeah... if somehow you can afford two lenses, get the Oly 17mm f/1.8 and the 45mm f/1.8. Between these two and your PanaLeica 25mm f/1.4, you'd be totally set for lowlight work indoors with fast glass in full-frame equivalent focal ranges of 35, 50 and 90mm. And if you ever see a good deal on the Panny 14mm f/2.5, grab it. Then you'd have 28mm covered. Great for group shots and a great fit on both your G3 and E-PM1.

I have no issues with my E-m5 with Panasonic 20mm using the AF light. I used to hate it with my e-pl1 but now I have no issues with it. Af is slow but it will lock focus the first time in a dark room. But 20mm and 25mm are too close of a focal range when you are looking to expand your lens collection.

Yeah... if somehow you can afford two lenses, get the Oly 17mm f/1.8 and the 45mm f/1.8. Between these two and your PanaLeica 25mm f/1.4, you'd be totally set for lowlight work indoors with fast glass in full-frame equivalent focal ranges of 35, 50 and 90mm. And if you ever see a good deal on the Panny 14mm f/2.5, grab it. Then you'd have 28mm covered. Great for group shots and a great fit on both your G3 and E-PM1.

You have the 25, so the 20 is perhaps a bit close (and horribly slow to AF in poor light, and merely 'slow' under normal circumstances) in terms of focal length.

Whether you'd prefer the 45/1.8 or th 17/1.8 (or even 12/2.0) depends on whether you want a wider or a tighter perspective. Personally, I really like 17+25 as a focal length combo for indoor low light. Longer gets a bit too long, but can occasionally be fun.

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